Malicious PDF — malware analysis report

Static analysis result for SHA-256 d902563cb9c3e5d4…

MALICIOUS

PDF

88.6 KB Created: 2020-12-28 16:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 82027e92935d4cc1be611c21a033124f SHA-1: fc8abf495c138abfb8f405cb862cfd16c66f9e54 SHA-256: d902563cb9c3e5d4553c9f328a955e2d07ea333fe3a0f77e802d1eb20dbb9630
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffine.ru/wb?keyword=dragon%20warrior%20monsters%202%20walkthrough In PDF document text
    • https://vuguzakinizole.weebly.com/uploads/1/3/4/4/134493236/jukesuxabaru_momigagu_popubo_niwetenagoguli.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/53eebf2ff.pdfIn PDF document text
    • https://ludalobupum.weebly.com/uploads/1/3/4/5/134528654/3007138.pdfIn PDF document text
    • https://taketelufi.weebly.com/uploads/1/3/4/7/134745639/govan.pdfIn PDF document text
    • https://julalawigito.weebly.com/uploads/1/3/4/8/134869680/nawenezud_xevutojazajul_tetox_gafoxuki.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/sufaxonivowakikedo.pdfIn PDF document text
    • https://xowunaxevome.weebly.com/uploads/1/3/4/6/134679103/kawop_lowavuka_daferamaludux_jeduku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/subud/acuerdo_286_ceneval.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/kesejilexaxodiku.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/maths_limits_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/63821381939.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/2012_chrysler_town_and_country_touring_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/employee_evaluation_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54d0c35-ef00-40ce-b009-2c4fb4ebb24f/frawley_stadium_de.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/lopisanabumaros.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BEA 5388 bytes
SHA-256: 203c232a5ba30bf94de77e5a7d8a671dd3b7e8232b660f8b13a9fd62f8795117
font_01_sfnt_off00012e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E28 11636 bytes
SHA-256: 03dd9be5f14d5b2feeb700e746f83854af4ae44783af336cf38ffb1bc227b139

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